JPH0222597Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat generating device for an electric kotatsu.

As shown in FIG. 1, a conventional electric kotatsu heat generating device is generally a heat generating device 9 that has an infrared heater 3 installed inside the center of the upper back surface of a kotatsu tower 8.
was installed. For this reason, the convection heat generated by the infrared heater 3 overheats the upper part of the kotatsu tower 8, forcing the heating device 9 to be lowered and protruding inside the kotatsu tower 8. Sometimes our feet would bump into each other, and when several people were trying to warm themselves, the inside was narrow and difficult to use.

Therefore, recently, so-called furniture-like kotatsu, which can be used all year round as a low table in the summer and a kotatsu in the winter, have become popular, but this heat generating device 9 also has the same problem as above, and it is urgently necessary to make the heat generating device 9 thinner. ing.

In addition, it is necessary to conserve resources and energy and improve the feeling of comfortable heating, and the infrared heater 3, which is generally used as a heat source for the conventional heat generating device 9, can provide visual warmth and provide infrared rays immediately after turning on the power. Although it is advantageous in terms of quick heating, it mainly generates near-infrared rays and little far-infrared rays, so although you can feel a stimulating warmth when using it, you cannot get the feeling of being warmed to the core of your body. . This is due to the relationship between the wavelength of the emitted infrared rays and the wavelength absorption characteristics of the futon inside the kotatsu tower 8 and the skin and clothing of the person warming the room. It is well known in the literature that the absorption characteristics of infrared rays are not very good, and for this reason, the feeling of warmth from infrared lamp heaters is felt as described above, and near infrared rays alone are insufficient to provide comfort. This requires efficient far-infrared rays.

Furthermore, there is a hot air type that warms the inside of the kotatsu tower 8 by circulating hot air, but this is efficient and provides a mellow warmth with less heat loss due to heating the upper part of the kotatsu tower 8, but it is still possible to warm the inside of the kotatsu tower 8. Warm air alone did not warm the core of the vehicle, and it lacked comfort.

The present invention has been made to eliminate the above-mentioned drawbacks, and includes forming a heat sink having an intake port and a radiation port below the reflector, and a radiation layer provided on at least the outer surface of the heat sink. It has a blower installed on the top of the infrared heater and an infrared heater installed on the top of the radiation outlet, and a heat shield plate is installed on the heat sink to isolate the blower and the infrared heater, so that the infrared heater is not close to the radiation outlet. Infrared rays can be obtained directly, and the radiant layer of the heat sink heated by the infrared heater converts them into far infrared rays, resulting in a wide effective heating area.
The warm air that passes through the air passages provides soft warmth and evens out the temperature inside the kotatsu tower, improving comfort during heating. There is no accumulation of heat, the blower device can be made thinner, there is no chance of feet hitting each other, and usability is improved.Furthermore, there is no heat loss because the heat flow is effectively used as hot air.
The goal is to provide products that improve energy efficiency.

An embodiment of the present invention will be described below with reference to the drawings.

The structure of the embodiment is as shown in FIG. 2. Reference numeral 1 denotes a heat sink, and an organic radiation layer 7 is provided on both the front and back surfaces of the plate, which is made of an inorganic film such as alumina or zirconia or is flocked with short fibers such as rayon or acrylic. It is made of a steel plate, and has an air intake port 11 in the center of the heat sink plate 1, a radiation port 12 on its outer periphery, and an air outlet 13 on its outer periphery. Note that the outlet 13 on the outermost periphery does not need to be a hole, but may be a notch. 2 is a blower device, which is a stirring type blower device that is installed almost in the center of the kotatsu tower 8 and sends air from the bottom to the entire outer circumference of the suction blades, and has thin disc-shaped blades attached to a thin motor. It is attached to the upper part of the intake port 11. 3 is an infrared heater, which is a quartz tube filled with argon gas or the like and uses a filament, and is a thin tube lamp heater with a diameter of about 1 cm, and the infrared heater 3 is mounted opposite the upper part of the radiation port 12. It is something. 4 is a reflector,
It is made of an aluminized steel plate or the like and covers the entire upper part of the heat sink 1, and the blower 2 and the infrared heater 3 are housed between the heat sink 1 and the reflector 4. A protective net 5 is made by arranging steel wires in a lattice pattern, and covers the entire lower surface of the heat sink 1 to prevent it from touching the high temperature parts of the heat sink 1 and the like. A heat shield plate 6 is made of an aluminized steel plate or the like and is attached to the heat sink plate 1 so as to surround the blower device 2. A represents the direction of air flow, and indicates the flow of air through the air passage 10 formed by the air blower 2 from the air inlet 11 to the air outlet 13 via the air blower 2. . Reference numeral 9 denotes a heat generating device, which is a general term for a device assembled from the above-mentioned components.

The operation of this embodiment having the above configuration will be explained.

When the power is turned on, the infrared heater 3 lights up and emits infrared rays. This infrared ray mainly emits near infrared rays, and is radiated to the inner surface of the heat sink 1, and some of the infrared rays pass through the radiant opening 12 and brighten the inside of the kotatsu tower 8. Gives a sense of warmth.

In addition, other infrared rays reach the inner surface of the heat sink 1 and heat the heat sink 1. Eventually, the temperature of the heat sink 1 rises, and from the radiation layer 7 applied to the lower surface of the heat sink 1,
It generates new infrared rays as secondary radiation and radiates them into the kotatsu, thereby warming the inside of the kotatsu.

At this time, the infrared rays emitted from the radiant layer 7 are far infrared rays that emit more of the longer wavelength range because the surface temperature of the generation source is lower than that of the infrared heater, and the material of the radiant layer 7 is alumina. In the case of inorganic materials such as or zirconia, they generally have a high emissivity, so they can efficiently obtain a large amount of far infrared rays relative to the surface temperature.

In addition, in the case of flocking, compared to the emissivity of 0.7 to 0.8 that organic fibers have, countless flocks are actually implanted on the surface of the steel plate, so the surface area is essentially large, and the surface area effect allows for a large number of long distances. Since infrared rays can be obtained, the material inside the kotatsu is therefore effectively heated.

Further, the infrared rays radiated upward from the infrared lamp 3 are reflected by the reflecting plate 4 and act in the same manner as described above.

Further, the convection heat generated by the infrared heater 3 is blown out from the air outlet 13 to the outside of the heat generating device 9, that is, inside the kotatsu tower 8, by the blower 2 installed approximately in the center of the kotatsu tower 8.
The high temperature heat that would normally accumulate in the upper part can be used as hot air, and the upper part of the kotatsu tower 8 is not heated, so there is no heat loss and a thin structure can be achieved. The flow direction A of the air by the blower device 2 is that the air is sucked in from the central air intake port 1 to cool the motor of the blower device 2, and convection heat from the upper part of the infrared heater 3 is blown out from the air outlet 13 to cool the air inside the kotatsu tower 8. circulate.

Further, between the heat radiating plate 1 and the reflecting plate 4, a heat shield plate 6 blocks radiation from the infrared heater 3 to the blower device 2. In this way, far and near infrared rays are evenly radiated inside the kotatsu tower 8, hot air is circulated, and the temperature is made uniform with little heat loss.

As described above, according to the present invention, a heat sink is formed which has an intake port and a radiation port below the reflector, and a radiation layer is provided on at least the outer surface, and is mounted above the intake port of the heat sink. It has a blower device and an infrared heater attached to the top of the radiation opening, and a heat shield plate is installed on the heat sink to isolate the blower device and the infrared heater. In addition to providing stimulating warmth and effective heating, the heat from this infrared heater is efficiently converted into far infrared rays as secondary radiation from a heat sink with a radiant layer.
In addition to being able to obtain efficient infrared rays that warm the body to its core, the warm air blown toward the outer periphery provides soft warmth and evens out the temperature inside the kotatsu tower, improving comfort when warming the body. In addition, the blower device eliminates the accumulation of high-temperature heat in the upper part of the kotatsu tower, and the blower device can be made thinner, eliminating the possibility of feet hitting each other, improving usability. Since it is used effectively, there is no heat loss and there is an energy saving effect.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a conventional electric kotatsu heating device when it is attached, and FIG. 2 is a sectional view of the heating device of an electric kotatsu showing an embodiment of the present invention. 1... Heat sink, 2... Air blower, 3... Infrared heater, 4... Reflector, 6... Heat shield, 7...
Radiation layer body, 11...Intake port, 12...Radiation port, 1
3...Air outlet.

Claims (1)

[Scope of utility model registration request] A heat sink 1 is formed which has an intake port 11 and a radiation port 12 below a reflector plate 4 and a radiation layer 7 is provided on at least the outer surface thereof, and a blower device is attached to the upper part of the suction port 11 of the heat sink 1. 2 and an infrared heater 3 attached to the upper part of the radiation port 12, and a heat sink 1.
A heat generating device for an electric kotatsu, characterized in that a heat shield plate 6 is provided to isolate an air blower 2 and an infrared heater 3.